Pneumatic horn



W. Az GARR/ITT.

PNEUMATIG HORN.

APPLICATION FILED MAI/20,1920.

Patented Nov., 7, i922 www@ @#.IIIYIIIIIIIII lrlotu il, w22.. y

WALTER GARRATT, @F CQVENGTQN, KENTUCKY.

PNEUMATC HQE/'2l'.

Application tiled may 2U, wml. Serial No. Elb.

To oZZw/lomit may concern: i '.lhe bellows device comprises a number ot Be it known that l, llTAL'rnn A.. Gannarr, disks l() which are soldered together ata citizen ot the United States, and a resident their peripheries, and are made of thin ot Covington, Kenton County, Kentucky,I resilient metal so that the assembly will act @o 5 have invented certain new` and useful llmas abellows. lhe disks are perforated with provements in Pneumatic Horns, of .which a central hole, 10g. the following is a full, clear, and enact4 de- 'lhe number of disks and, therefore, the' scription, reference being had to the draw bellows sections may be varied as may be ings, forming a part ot this specification. desired, the object being to provide sutlie5 le My invention relates to horns., or signals, cient surface area to accomplish the results operated by air suction, and has app-licawhich may be attained within considerable tion chiefly to motor vehicle warning sig-4 limits by decreasing the number and innals, although its range of use need not be creasing the surface diameter ot the bellows confined to this, as will be apparent. or vice versa. 7@ le T he essential principle ol' my invention The exact connection to the suction pipe embodies the employment of what may. be With the bellows comprises a union ll, con` characterized as a vacuum Vmotor coupled nected to a fitting l2 mounted in the bracket. to the intake manifold or suction side of 0n this fitting is lirmly soldered the rearthe motor vehicle engine to actuate` a hammost disk of the bellows assemblyn 75 2o nier or striker tor setting up sound producit the central opening in the foremost ing vibrations in the diaphragm of any suitone of the disks is mounted the danged ring able' horn. With this object in view, l have 13, which is also iirmly soldered into place. designed the construction as will be liereinlioosely mounted in the bellows opening is after particularly pointed out and claimed, a Stop post l5 with' its head 15a guided in so 25 so that l am enabled to produce a sound ot the fitting 12. 'lhis post is provided with `startling character with a minimum en` a nut le which abuts against the end oi the penditure oi" suction and thus to operate the fitting so that the distance between the end horn with practically no loss ot engine oil the post and the bellows valve may be porren adjusted as desired. g5 53o ln the drawings, The flanged ring 13 carries or is firmly Figure l is a sectional view of the device. united to the cruciform plate 16, which carli`igure 2 is a perspective view of the two ries preferably a pair of bent spring arms intermediate vibratory devices, one of 17, terminating adjacent each other in which provides spring means for retaining notched ends, which serve to mount the stern so se the valve, button 1S of a valve 19, although a single Fig, 3 is a plan view of one of the disks of spring arm would also serve the purpose. the bellows. rlhis valve 19 is held by the spring arms in 'lhe sound projecting element or horn is Contact with the flanged ring i3, and the shown at l, which is flanged out at 2 and valve is displaced by means of the bellows e5 lll mounted on a conical casing 3. The casing device pulling rearwardly on the crucitorni has mounted thereon a bracket l over which plate until the post l5 contacts with ene mounted the shell y'lhe pipe 6 running valve. ifi-om the intake manifold of the engine, comllhe vacuum on the inside ot the bellows municates with a bellows device which in caused by the engine suction with. the atmosloo le its turn imparts vibration to a diaphragm 7 pheric pressure withouninitiates tbe movemounted against the flanged portion Q of the. ment of thebellows with the valve 19 closed horn vor projector and carrying a sound amuntil the movement ot the valve inwardly plitying device. instead oi a metal diais stopped,opening the valve and equalizing pbragm some other mechanical sounding dethe pressure, causing the bellows plates tolo' @il vice could he substituted. return to normal position and thus again rl`he diaphragm has secured thereon cenclosing thevalve. lt will be evident that the trally the washers 8 which carry an adjustarea ot' the bellows plates and the number able post il. This post. l) acts as an anvil ot the plates will determine the power et the 'to receive the blows or" the hammer or striker device. lt the valve instead oi" oating with il@ r5 by means ot' which the diaphragm is set its seat were held against movement, a more into vibration. rapid movement of the bellows would be obtained but the stroke, so to speak, would be much less powerful.

The cruciform plate 16 also carries an arched plate 20, which has a small double ellipticplate spring device 21 on its central portion. It is this device 21 which carries a weight member 22 which serves as the hammer in strikingv the anvil Ypost at the center of the diaphragm. 4

The spring 21 upon is mountedthus gives a resilient stroke to the hammer, and by adjusting the anvil post 9 in the diaphragm a succession of extremely device the moment'the Athe engine suction by the opening valve in the pipe 6 which is not shown.

rapid and comparatively lpowerful blows are delivered on the diaphragm to cause an extremely loud anddiscordant set of sound-vi-- brations. The vibration of the bellows itself and of the elliptical springmember 21 also adds to the starting noise produced by the bellows is opened to ofA the While I have illustrated my invention in the formes to details which I have found preferable, it will be understood that these 1 specific detalls may be varied within wide matic vibratory member comprising interf ment and a valve to close connected resilient plates, with openings through the plates to form an inner compartthe compartment.

2. A pneumatic vibratory member comprisinga series of plates of resilient nature, said plates having apertures between their peripheries and jointed in anair tight manner at the peripheries, means for subjecting said member to pneumatic action, and a mechanical sounding device, withfmeans intermediate the pneumaticmember and l the sounding device for setting up vibrations in the latter device.

3. A pneumatic vibratory member coinprising a pipe element, a series of plates united at the peripheries and having apertures therethrough, means for connecting the pipe element to the said apertured portion ot the assembly and a valve mounted over the opposed apertured portion of the assembly, and means for unseating the valve upon pneumatic action exerted through the pipe element upon the assembly, and a mechanical sounding device, with which the hammer 22 'the air power upon lplates,

means intermediate the pneumatic member and the sounding device for setting up vibrations in the latter device.

4. In a device of the character described, the combination with a `pneumatic member comprising a plurality of interconnected plates, means for applying air power thereto, a valve mounted thereon forlinterrupting the air powerpupon movement of the member, a spring member carried also on the pneumatic member, and a mechanical sounding device ,lying in the path of the spring member whereby vibration of the pneumatic member will cause a vibratory hammer on ,the sounding member.

5. In a device of theV character described, the combination of a pneumatic member comprising a. plurality of interconnected plates, means for supplying air power thereto, alavalve mounted thereon for interrupting the pneumatic member tc vibrate the pneumatic member, spring means VJfor maintaining the valve upc-n its seat, and

a fixed member to act as an unseating stop for the valve upon motion of the pneumatic member.

6. In a device of the character described, the combination of a pneumatic member comprising a plurality ot interconnected means or supplying airpower thereto, avalve mounted thereon for interrupting the air power upon the pneumatic member to vibrate the pneumatic member, spring means Jfor maintaining the valve upon its seat, said spring means being likewise mounted on the pneumatic member, and a xed member to act as an unseating stop for the valvel upon motion of the pneumatic member.

y 7 In a device of the character described, the combination f a pneumatic member comprising a plurality of interconnected plates,means for supplying air power thereto, a valveL mounted thereon for interrupting the air power upon the pneumatic member to vibrate the pneumatic member, spring means for maintaining the valve upon its seat, said spring means .being likewise mounted on the pneumatic member, and a fixed member to act as an unseating stop for the valve upon motion of the pneumatic member, and a spring structure mounted on the pneumatic member adapted for variation of the vibratory movements thereof.

8. In a device of the character described, the combination of a pneumatic'l member comprising a plurality of interconnected plates, means for supplying air power thereto, a valve mounted thereon for interrupting the air power upon the pneumatic member to vibrate the pneumatic member, spring means for maintaining the valve upon its seat, said spring means being likewisel mounted on the pneumatic member, and a fixed member to act as an unseat-ing stop for the valve upon motion of the pneumatic member,a spring structure mounted on the pneumatic member adapted for variation of the vibrator-y movements thereof, and sounding means lying in the path of the spring member for contactual hammering, to set up sound vibrations of the sounding means.

9. In a device of the character described, the combination of a pneumatic member comprising a plurality of interconnected plates, means for supplying air power thereto, a valve mounted thereon for interrupting the air power upon the pneumatic member to vibrate the pneumatic member, spring means for maintaining the valve upon its seat, said spring means being likewise mounted on the pneumatic member, and a lined member to act as an unseating stop for the valve'y upon motion of the pneumatic member, a. spring structure mounted on the pneumatic member adapted for variation .of the vibratory movements thereof, and a diaphragm' lying in the path of the spring member for contactual hammering thereby. l0. lln a device of the character described, the combination of a pneumatic member comprising a plurality of interconnected plates, means for supplying air power thereto. a valve mounted thereon for interrupting the air power upon the pneumatic member to vibrate the pneumatlc member, spring means for maintaining the valve upon its seat, said spring means being likewise mounted on the pneumatic member, and a fixed member to act as an unseating stop for the valve upon motion of the pneumatic member, a spring structure mounted 'on the pneumatic member adapted for variation of the vlbratory movements thereof, and a diaphragm lying in the path of the spring member for cpntactual hammering thereby, said diaphragm having an adjustable anvil member thereon to, receive the hammering contact.

11. In a device of the character described, the combination of a pneumatic member comprising a plurality of interconnected plates, means for supplying the airpower thereto, a-valve mounted thereon for interrupting the air power upon the pneumatic member to vibrate the pneumatic member, spring means for maintaining the valve upon its sea-t, said spring means being likewise mounted on the pneumatic member, and a xed member to act as an unseating stop for the valve upon motion of the pneumatic member, said fixed member being adjustable to control the point of unseating ot the valve. a

l2. lln a sounding device, a bellows structure, means for setting up a suction therein, a valve carried by the bellows, iixed means for unseating the valve, spring means for mounting the valve on the bellows, a double elliptic spring carried by the bellows, a diaphragm, and a hammer mounted on the spring on the outside thereof to contact with the diaphragm upon the vibrations of the bellows VVLTER A. GARRATT. 

